* Now also supports setting a custom metatable (replacement of
index.defineTag)
* Load tag.define API on boot so can be used for initial client index
from CONFIG
* Docs and examples
* Moved YAML library import to index plug (so no async syscalls anymore)
should speed things up
* Merged task and item indexing
* Merged tasks plug into index (questionable)
* taskstate is now no longer a tag, but needs to be configured via
configs